216849107 has 2 divisors, whose sum is σ = 216849108. Its totient is φ = 216849106.

The previous prime is 216849103. The next prime is 216849133. The reversal of 216849107 is 701948612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216849107 - 2² = 216849103 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216849103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108424553 + 108424554.

It is an arithmetic number, because the mean of its divisors is an integer number (108424554).

Almost surely, 2^216849107 is an apocalyptic number.

216849107 is a deficient number, since it is larger than the sum of its proper divisors (1).

216849107 is an equidigital number, since it uses as much as digits as its factorization.

216849107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 216849107 is about 14725.7973298562. The cubic root of 216849107 is about 600.7851822184.

The spelling of 216849107 in words is "two hundred sixteen million, eight hundred forty-nine thousand, one hundred seven".